Door-stop



G. G. 0. MARICHAL.

DOOR STOP. APPLICATION FILED OCT. 6, 1919.

Patented Aug. 16, 1921.

ratus in longitudinal section;

GUSTAVE OCTAVE MARIGHAL, OF PARIS, FRANCE.

' DOOR-STOP.

Specification of Letters Patent.

Patented Aug. 16, 1921.

Application filed October 6, 1919. Serial No. 328,713.

To all whom it may concern: e

Be it known that I, Gnonens Gus'mvn OCTAVE MARICHAL, residing in Paris, France, have invented new and useful Improvements in or Relating to Door-Stops, of which the following is a specification. The invention relates to a safety stop that can be placed under a door in order to prevent the door beingopened, or to give an alarm if an attempt is made to force the door.

The apparatus used comprises a lever, one

end of which, formed as a wedge, engages under the door, while the opposite end controls an electric contact 1n the circult of a bell. Thus the bell is operated when the contact closes the circuit of the bell when the door is pushed.

The accompanying drawing of example a construction cording to the invention.

' Figure l is a side elevation shows by 'way of the appa- Fig. 2a back view, and

Figs. '3 and 4 illustrate the manner in which the .two essential parts of the apparatus, are formed.

The stop device comprises a base 1 providedywith hooks 2 and constituted by a plate which is bent at the back to form a vertical lug 14.' This lug provided with an opening 13, receives at its end a block 3 of fiber or other insulating material. The block 3 carries two contacts 4 connected to screw-threaded pins 5, while cylindrical washers '6 and milled nuts 7 are used for securing wires connected to the circuit of a bell or of any desired alarm device.

The base 1 is provided with two side plates 8 to which are pivoted at 9 the side plates 10 of a lever 11. The front arm of the said lever isshaped as a wedge. The rear arm engages with the opening 13 of the lug 14 and is bent overat its end so as to rest on the bottom edge of the opening 13, which opening moreover operates as a guide during the pivoting movement of the lever.

To the end of the said lever is secured a blade 12 of chrysocal or other conducting and resilient material.

of a device acopening, an inclined inner when the inclinedend of The: said blade comes into contact with the contacts .4 when the front of the lever is lowered.

The manufacture ceedinglysimple. The base can be for instance formed by cutting a piece of steel of the apparatus is eX- plate to the outline shown in Fig. 3, with The lever 11 is formed by cutting a piece" shown in Fig.

of steel plate to the shape 4.. The laterallugs after being bent, form the side plates 10 of the lever 11. i

The working of the device is as follows: The hooks 2 are introduced into suitable recesses provided in the floor so as to place the front of the lever ll against the door, the opening of which is to be prevented. If the said door is pushed, it will jam on the front of the lever and offer considerable resistance to opening. Moreover the front of the lever being lowered, the rear portion will be raised, and the blade 12 will make contact between the two contacts 4 so that the bell will be operated.

This device while being simple and (zoo nomical in construction, insures as it is very reliable in working.

I claim:

A door stop comprising a base plate having an upturned end provided with an opening, and also having upturned side lugs at'the opposite end; an insulating block secured on said upturned end, and provided with electrical great safety,

contacts; an upper plate having a downturned end arranged in said end, and downturned side lugs on'opposite sides of said inclined end and pivotally first-named lugs, attached to the plate, extending arranged to engage the electrical contacts said upper plate front. end of said upper is depressed by a door.

In witness whereof I aflix my signature.

aromas cusmvr ocTAvr MARICHAL.

connected to the and'a circuit closing plate through said opening and 

